LOUIS WALSH may have just landed himself in trouble with previous judges on The X Factor as he praised Nicole Scherzinger.

As he discussed this year's panel, he appeared to make a sly dig at judges on previous series of the competition.

Praising Nicole, he said: "She can really, really sing. She's touring with Andrea Bocelli, she did Cats, she was in the Pussycat Dolls – she can sing, perform, act, she can do all kinds of music and she can do it live."

Before he quipped: "Unlike other judges on the show."

Louis also revealed he's over the moon that Sharon Osbourne is back on the show after he campaigned for her return.